Description        High voltage power supplies utilize linear technology to provide one or more DC outputs at voltage levels of hundreds or thousands of volts. They are frequently used in specialized applications such as telecommunications, video technology and medical equipment. Some have outputs that are adjustable, either locally or via computer interface.  Important specifications to consider when searching for high voltage power supplies...
Learn More about High Voltage Power Supplies


Q & A on High Voltage Power Supplies

We asked our users for their input on High Voltage Power Supplies. Here are the results of 80 users familiar with High Voltage Power Supplies.

Who Took Our Poll? | Design Trends | Applications and Use | Features | Buying Advice

Who Took Our Poll?Top

Design TrendsTop

Q:
What new technologies are influencing high voltage power supply design?
10 answers
Answers:
HV DC and associated AC-DC-AC, HV power semi conductor devices; for efficient power transmission, HV Inverter based variable frequency power supplies.
~Ashwani Kumar C, Engineering Consultant, Mumbai, India
Current fed topology - better that ZVS or ZCS safeguards secondary high voltage diodes and does not require secondary high voltage choke.
~Bharat Suji, Research & Development, Bangalore, India
High voltage DC magnetic motors and more.... and solid state power generation stand alone units.
~Shawn S, Research & Development, Toronto, Canada
One example is the vacuum magnetic contactor for 6.6/11kV, instead of using the conventional magnetic contactor. The performances of these particular starters are more efficient and safer.
~Ahmad reza Hashim, Electrical Technician, Penang, Malaysia
Sub-miniaturization, materials, super-conductors
~John T, Project Manager, Houston, TX
Boost switching, voltage multipliers
~Peter M, Engineer, Austin, TX
Solid state components.
~Manufacturing, San Nicolas de los Garza, Mexico
Inverter technology
~Graham S, Engineer, Brisbane, Australia
SiC-JFET inverters
~Máximo P, Project Manager, Buenos Aires, Argentina
Powder coating
~Other, Moosejaw, Canada

Q:
From your perspective, which companies are creating the most innovative high voltage power supplies?
10 answers
Answers:
Varian, Ross Engineering, Hipotronics, Universal Voltronics
~Brian O, Engineering Technician, Heath, OH
Ultravolt seems good. I haven't needed to buy one for a long while, so I'm not on top of this.
~Graham S, Engineer, Brisbane, Australia
Don't know - I got an email from one that made ultra miniature supplies that looked interesting, but I would have had to call for a quote when what i wanted to do was look at a price list.
~Peter M, Engineer, Austin, TX
I have not found one that has what i want. Not on the shelf anyway.
~Shawn S, Research & Development, Toronto, Canada
Power Electronic System Laboratory, Switzerland
~Máximo P, Project Manager, Buenos Aires, Argentina
American Superconductor
~John T, Project Manager, Houston, TX
Spellman High Voltage
~Engineering, Consulting, Haifa, Israel
L3Com, Bosch
~Design Engineer, Taoyuan, Taiwan
Quite a few
~Bharat Suji, Research & Development, Bangalore, India
Spellman
~Gadi Oron, Engineer, Rehovot, Israel

Applications and UseTop

Q:
What are some of the applications you have used high voltage power supplies for?
23 answers
Answers:
Vacuum tube amplifiers biological cell splitting ion implantation equipment electric fences
~Peter M, Engineer, Austin, TX
Sand mineral separation Dust precipitation Rock breakage Studies of mineral permittivity
~Graham S, Engineer, Brisbane, Australia
Power source for single ended tube amplifiers using classical direct hested tubes like 211-845-GM70. for audio amps. This amps get extreme expensive traditional psu. With a low noise smpsu a lot of things gets simpler and much smaller an less expensive. I dream about a high quality supply unit with tabbed filament output 6.3V- 10V-20V I min 25A. and a high voltage output adjustable 1kV - 2kV min. 250mA. Still better the supply should also be able to supply a 300B or other powertube filament 3-5A- 5V and 6.3V and a low plate voltage best tapped to 350V and 450V. Best is if the high voltages rises with some time delay. A supply as described would be an extreme usable power supply for a lot of people building high quality tube amps. It would lower the costs a lot and the weight, too. I know that many tube people would say no no no not smpsu, but the lower costs and the regulation would, I think, far outperform most analog psu used today.
~Flemming Madsen, Vocational teacher and tube repair and building costum tubegear for audio and recording, Akranes, Iceland
Studied as an undergrad subject for undergrad degree in Electrical Engg. Used Mainly as HV test Instruments for testing of Motor insulation.; e.g. HV test, Surge test, BDV for insulation materials etc.
~Ashwani Kumar C, Engineering Consultant, Mumbai, India
As voltage sources (up to 100 Kilovolts AC & DC) for calibrating Electrostatic Voltmeters, Precision Voltage Divider Standards & High Voltage Probes.
~Brian O, Engineering Technician, Heath, OH
For an XRAY tube inside a computerized tomograf. For a PZT actuator system, supplied from 1200V DC.
~Engineering, Consulting, Haifa, Israel
(a) Chiller system (b) gas compressor (c) boiler system particularly the feed water pump and etc
~Ahmad reza Hashim, Electrical Technician, Penang, Malaysia
Capacitor charging, capacitor research and development, power distribution research.
~John T, Project Manager, Houston, TX
Magnetrons - microwave - smps high voltage designs
~Bharat Suji, Research & Development, Bangalore, India
Zeropoint or free energy self powering units.
~Shawn S, Research & Development, Toronto, Canada
For vacuum ion pumps and TWT high voltage supplies. Also for high power pules for klystron and magenaton.
~Abnash S, Research & Development, Montreal, Canada
Lasers, tube amplifiers, flash chargers
~Alexander Z, Master Engineer Defense Power Systems, Athens, Greece
Radio frequency (27.12 MHz) heater
~Riccardo Marin, Design Engineer, Mussolente (VI), Italy
Repair, testing and calibration
~Technical Support/Services, Hornsby, Australia
Capacitive bank charging
~Engineering, Design, Thegra, France
High voltage project.
~Engineering, Design, Zagreb, Croatia
Subway transportation
~Máximo P, Project Manager, Buenos Aires, Argentina
Magnetron sputtering.
~Lomas de Zamora, Argentina
Airborne/UAV Radar
~Design Engineer, Taoyuan, Taiwan
Electrophotography
~Gadi Oron, Engineer, Rehovot, Israel
Laboratory Tests
~Manufacturing, San Nicolas de los Garza, Mexico
Powder coating
~Other, Moosejaw, Canada
Solar power
~Engineering, Design, Beijing, China

Q:
Please share with us any “non-standard” applications that a high voltage power supply has been used for.
8 answers
Answers:
Radar TWT power for 30,000ft altitude, low air pressure
~Alexander Z, Master Engineer Defense Power Systems, Athens, Greece
Radio frequency heater with triode: 12 kVDC, 135kW output
~Riccardo Marin, Design Engineer, Mussolente (VI), Italy
More so with High Voltage AC; calibrating dividers/probes capable of measuring KVAC.
~Brian O, Engineering Technician, Heath, OH
For testing the integrity of polymer-ceramic composite electrical insulation sealing for electrical drives.
~Ashwani Kumar C, Engineering Consultant, Mumbai, India
Cell splitting - I designed and built a custom supply for a university researcher a bunch of years ago
~Peter M, Engineer, Austin, TX
Lithotripter. Selfrag. But not industrially very useful IMHO because of energy considerations.
~Graham S, Engineer, Brisbane, Australia
Through my experience, high voltage work is totally dangerous and hazardous work. When we deal with this high voltage work, any non or sub standard application or equipment is uncompromisable due to safety factor.
~Ahmad reza Hashim, Electrical Technician, Penang, Malaysia
High quality, high power tubeamps for audio.
~Flemming Madsen, Vocational teacher and tube repair and building costum tubegear for audio and recording, Akranes, Iceland

Q:
Do you know of any disastrous mistakes that occurred due to the incorrect usage of a high voltage power supply?
6 answers
Answers:
Measuring setup too close (less than 6 inches) to Ground (High Voltage work area; cages). Using incorrect type of cable(s). Heavier cables were not supported properly.
~Brian O, Engineering Technician, Heath, OH
Use of dirty boards, leaky routes, bare contacts, water absorbing materials.
~Alexander Z, Master Engineer Defense Power Systems, Athens, Greece
Electrocution, electrical burns and destruction of property are always associated with high voltage uses.
~John T, Project Manager, Houston, TX
Not really, mostly just they could not do the task. But causing a fire is easy, and most industrial sized ones are lethal.
~Graham S, Engineer, Brisbane, Australia
Many people suffer injuries form shock - even experienced people DO NOT DRINK AND OPERATE HV
~Peter M, Engineer, Austin, TX
Seriously, no room for mistakes. Life is important.
~Bharat Suji, Research & Development, Bangalore, India

FeaturesTop

Q:
What would your design or feature "wish list" be for this product?
10 answers
Answers:
Capable of fine adjust via front panel controls and/or computer controlled. Able to ramp up/down the output voltages accurately w/ adjustable timing. Accompanied computer program(s) to run numerous tests on UUTs.
~Brian O, Engineering Technician, Heath, OH
I like to have one power supply that operates on 12 volts dc with multiple inputs to create high voltage with variable amps and volts to create a see saw affect.
~Shawn S, Research & Development, Toronto, Canada
Depends on whether the application draws much current and whether it is a "lab" or industrial installation. An accurate measurement of output voltage (and current?) is very important, however it is achieved. The supplies I used to design included an expensive divider resistor chain to allow this, because one cannot be confident of other approaches.
~Graham S, Engineer, Brisbane, Australia
Higher efficiencies and lower cost, more integrated utilization across a wider range of voltage and ampere ratings.
~John T, Project Manager, Houston, TX
250v, 10 ma very small and inexpensive - I have a few designs for such a supply.
~Peter M, Engineer, Austin, TX
Low gassing insulating materials, heat conductive pottings.
~Alexander Z, Master Engineer Defense Power Systems, Athens, Greece
(1) maintenance free (2) user friendly
~Ahmad reza Hashim, Electrical Technician, Penang, Malaysia
High voltage switch elements
~Máximo P, Project Manager, Buenos Aires, Argentina
Long trouble free operation
~Abnash S, Research & Development, Montreal, Canada
Economy :-))
~Bharat Suji, Research & Development, Bangalore, India

Q:
Is there any advice you want to share with users to help them avoid common errors in selection or usage of a high voltage power supply?
5 answers
Answers:
Do you require Single-Phase and/or Triple-Phase Line voltage. Have proper type of high voltage interconnecting cables & proper safety equipment. Dressing the HV cables properly in your set ups. And set up should be of proper distances from each other.
~Brian O, Engineering Technician, Heath, OH
There is no free energy. If charge moves, that is a current flowing, and current multiplied by voltage equals power. (Q=It, P=VI). A small current at high voltage can be BIG power, eg 30mA and 33kV is about one kilowatt.
~Graham S, Engineer, Brisbane, Australia
You will get further by concentrating on magnetic flex rather than electro magnetic field.
~Shawn S, Research & Development, Toronto, Canada
No. Our use was experimental type.
~Máximo P, Project Manager, Buenos Aires, Argentina
Consult a professional
~Peter M, Engineer, Austin, TX

Buying AdviceTop

Q:
Do you have any advice for people relative to buying or using high voltage power supplies?
8 answers
Answers:
Accurately calculate the load factors (test instruments/high voltage source(s)). Ensuring your Line voltage source is/are able to handle the high voltage power supplies. Whether single phase or triple phase, line source(s) is/are required. Importantly, is SAFETY!! Set ups should be in a controlled work area & shielded from technicians (in case of flash over).
~Brian O, Engineering Technician, Heath, OH
It is general: State what you want to achieve (eg "break gallstones") then how you think it can be done using the high voltage supply. Then use science or good advice to generate the specifications of a supply that can do the task. Also consider environmental specs like IP ratings. And safe failure.
~Graham S, Engineer, Brisbane, Australia
Jut be careful to not get hurt. Buy only if something is right for you. Design and build your own if you can't find it out there.
~Shawn S, Research & Development, Toronto, Canada
Safety first, foremost and always. Quality almost always comes with price, especially for safe and efficient systems.
~John T, Project Manager, Houston, TX
They do not have to be that expensive - should cost $750/kW.
~Bharat Suji, Research & Development, Bangalore, India
Diode built in India (ex IR) are not good at all.
~Riccardo Marin, Design Engineer, Mussolente (VI), Italy
Observe capacitance loading, humidity specs
~Alexander Z, Master Engineer Defense Power Systems, Athens, Greece
Become familiar with design topologies.
~Peter M, Engineer, Austin, TX


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